Desktop battery charger



FIG. 1 is a front, right, top isometric view of a desktop battery charger showing our new design;

FIG. 2 is a front, elevated view thereof;

FIG. 3 is a back, elevated view thereof;

FIG. 4 is a right elevated view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a back, left top isometric view thereof.

The broken line showing throughout the drawing figures is included for the purpose of illustrating environmental structure only and forms no part of the claimed design. 

The ornamental design for a desktop battery charger, as shown and described. 